P25_043 - 43 We use the conservation of energy principle The initial potential energy is Ui = q 2/40 r1 the initial kinetic energy is Ki = 0 the

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43. We use the conservation of energy principle. The initial potential energy is U i = q 2 / 4 πε 0 r 1 , the initial kinetic energy is K i = 0, the Fnal potential energy is U f = q 2 / 4 0 r 2 , and the Fnal kinetic energy is K f = 1 2 mv 2 ,where v is the Fnal speed of the particle. Conservation of energy yields q 2 4 0 r 1 = q 2 4 0 r 2 + 1 2 mv 2 . The solution for
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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